diff --git a/nixosModules/options.nix b/nixosModules/options.nix
index f2a2ac0d..9f4f7920 100644
--- a/nixosModules/options.nix
+++ b/nixosModules/options.nix
@@ -248,6 +248,21 @@
     };
 
     users = {
+      defaultGroups = lib.mkOption {
+        description = "Default groups for desktop users.";
+        default = [
+          "dialout"
+          "docker"
+          "libvirtd"
+          "lp"
+          "networkmanager"
+          "scanner"
+          "transmission"
+          "video"
+          "wheel"
+        ];
+      };
+
       aly = {
         enable = lib.mkEnableOption "Aly's user.";
 
diff --git a/nixosModules/users/aly/default.nix b/nixosModules/users/aly/default.nix
index 70471a54..90ed823d 100644
--- a/nixosModules/users/aly/default.nix
+++ b/nixosModules/users/aly/default.nix
@@ -17,17 +17,16 @@
     };
 
     home-manager.users.aly =
-      if config.ar.users.aly.manageHome
-      then import ../../../homes/aly
-      else {};
+      lib.attrsets.optionalAttrs
+      config.ar.users.aly.manageHome
+      (import ../../../homes/aly);
 
     users.users.aly = {
       description = "Aly Raffauf";
-      extraGroups = ["networkmanager" "wheel" "docker" "libvirtd" "video"];
+      extraGroups = config.ar.users.defaultGroups;
       hashedPassword = config.ar.users.aly.password;
       isNormalUser = true;
       linger = true;
-      uid = 1000;
 
       openssh.authorizedKeys = {
         keys = [
@@ -42,6 +41,8 @@
           ../../../secrets/publicKeys/aly_rustboro.pub
         ];
       };
+
+      uid = 1000;
     };
   };
 }
diff --git a/nixosModules/users/dustin/default.nix b/nixosModules/users/dustin/default.nix
index 48b2337f..9b3215cb 100644
--- a/nixosModules/users/dustin/default.nix
+++ b/nixosModules/users/dustin/default.nix
@@ -6,15 +6,14 @@
 }: {
   config = lib.mkIf config.ar.users.dustin.enable {
     home-manager.users.dustin =
-      if config.ar.users.dustin.manageHome
-      then import ../../../homes/dustin
-      else {};
+      lib.attrsets.optionalAttrs
+      config.ar.users.dustin.manageHome
+      (import ../../../homes/dustin);
 
     users.users.dustin = {
       description = "Dustin Raffauf";
-      extraGroups = ["networkmanager" "wheel" "docker" "libvirtd" "video"];
+      extraGroups = config.ar.users.defaultGroups;
       hashedPassword = config.ar.users.dustin.password;
-
       isNormalUser = true;
       uid = 1001;
     };
diff --git a/nixosModules/users/morgan/default.nix b/nixosModules/users/morgan/default.nix
index 09387420..92b500cf 100644
--- a/nixosModules/users/morgan/default.nix
+++ b/nixosModules/users/morgan/default.nix
@@ -6,15 +6,14 @@
 }: {
   config = lib.mkIf config.ar.users.morgan.enable {
     home-manager.users.morgan =
-      if config.ar.users.morgan.manageHome
-      then import ../../../homes/morgan
-      else {};
+      lib.attrsets.optionalAttrs
+      config.ar.users.morgan.manageHome
+      (import ../../../homes/morgan);
 
     users.users.morgan = {
       description = "Morgan Tamayo";
-      extraGroups = ["networkmanager" "wheel" "docker" "libvirtd" "video"];
+      extraGroups = config.ar.users.defaultGroups;
       hashedPassword = config.ar.users.morgan.password;
-
       isNormalUser = true;
       uid = 1002;
     };